Arginine: ok I will check what products/brands NP has, I assume bulk is better than pills form. HOW MUCH PER DAY

Maca: Quality is crucial. OK then is what brand is considered quality, I like NOW FOODS, is that good quality.

Icariin: Looking for recommended

Arginine Alpha Ketoglutarate: At least 3g per dose. Up to 3 doses per day. On an empty stomach.
Maca: NOW Foods is fine.
Icariin: NutraPlanet has 20% Icariin as powder. Be aware, though, that Icariin is very bitter. And hard to mix. Might need capsuling. Otherwise look for Icariin-containing products. AN's RPM is one example. Contains 50% Icariin. Highest available extraction.

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